Positive Electrode Active Material For Lithium Secondary Battery Including Lithium Cobalt Oxide Having Core-Shell Structure, Method For Producing The Same, And Positive Electrode And Secondary Battery Including The Positive Electrode Active Material

The present invention relates to a positive electrode active material for a lithium secondary battery including a lithium cobalt oxide having a core-shell structure, wherein the lithium cobalt-doped oxide of the core and the lithium cobalt-doped oxide of the shell include each independently three kinds of dopants and satisfy specific conditions, a method for producing the same, and a positive electrode and a secondary battery containing the positive electrode active material.